Abstract

Using the non-linear finite element analysis, the snap-through behavior of the button is studied. For the specified case, the finite element results agree with those of the experiments. From the numerical results, the forcedisplacement curves and click ratios of various button design cases are obtained. This research will provide the information of the button design for industrial engineers.

Highlights

  • The snap-through problem is a typical topic in solid mechanics

  • The snap-through behavior has been applied to the button design (Fig. 2) in electronic products such like mobile phones or cameras

  • In ANSYS, contact conditions are given on the contact surfaces between the indenter and arch shell

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Summary

Introduction

The snap-through behavior has been applied to the button design (Fig. 2) in electronic products such like mobile phones or cameras. Under the snap-through phenomenon as shown, people can feel a click or jump motion when their fingers press the button. When the applied force F approaches the critical point a, the structure will jump and snap along the a-c path. If the displacement-control method is adopted, the F-v relation will follow the a-b-c path. The snap-through deformation of the arch shell is studied. (b) Forcedisplacement (F-v) relation of snap-through deformation (b) Fig. 1. (a) Snap-through deformation. (b) Forcedisplacement (F-v) relation of snap-through deformation

Problem Definitions
Non-Linear Finite Element Modeling
Experiments
Design of Button
Validation of Finite Element Modeling
Design and Analysis for Button
Conclusions
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